Finding the Fourth Proportional to 1,585.98, 2,188.72 and 922.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,585.98 : 2,188.72 = 922.69 : x
2. Step 2: Convert to fraction form
   1,585.98/2,188.72 = 922.69/x
3. Step 3: Cross multiply
   1,585.98x = 2,188.72 × 922.69
4. Step 4: Simplify right side
   1,585.98x = 2,019,513.95
5. Step 5: Solve for x
   x = 2,019,513.95/1,585.98
6. Step 6: Final answer
   x = 1,273.35